1.write SQL basic queries, such as select and join
2. find bugs from SQL queries and discussed the possible way to improve it. It is easier than the tasks on Hackerrank.
3.IQ test. one for each round. Do not see the point, but keep in mind.
4. A lot of experience questions. You have to be clear that you are not interested in business, but mainly in tech.

Question

1.write SQL basic queries, such as select and join
2. find bugs from SQL queries and discussed the possible way to improve it. It is easier than the tasks on Hackerrank. 
3.IQ test.   one for each round. Do not see the point, but keep in mind. 
4. A lot of experience questions. You have to be clear that you are not interested in business, but mainly in tech.

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